diff --git a/packages/core/index.ts b/packages/core/index.ts
index 7c003189..a7a539ea 100644
--- a/packages/core/index.ts
+++ b/packages/core/index.ts
@@ -12,6 +12,7 @@ export { default as markPasteRule } from './src/pasteRules/markPasteRule'
 
 export { default as getSchema } from './src/utils/getSchema'
 export { default as generateHtml } from './src/utils/generateHtml'
+export { default as getHtmlFromFragment } from './src/utils/getHtmlFromFragment'
 export { default as getTopNodeFromExtensions } from './src/utils/getTopNodeFromExtensions'
 export { default as getNodesFromExtensions } from './src/utils/getNodesFromExtensions'
 export { default as getMarksFromExtensions } from './src/utils/getMarksFromExtensions'
diff --git a/packages/core/src/Editor.ts b/packages/core/src/Editor.ts
index a9aed6f7..ce8d6758 100644
--- a/packages/core/src/Editor.ts
+++ b/packages/core/src/Editor.ts
@@ -10,6 +10,7 @@ import getNodeAttrs from './utils/getNodeAttrs'
 import getMarkAttrs from './utils/getMarkAttrs'
 import removeElement from './utils/removeElement'
 import getSchemaTypeByName from './utils/getSchemaTypeByName'
+import getHtmlFromFragment from './utils/getHtmlFromFragment'
 import ExtensionManager from './ExtensionManager'
 import Extension from './Extension'
 import Node from './Node'
@@ -357,14 +358,7 @@ export class Editor extends EventEmitter {
    * Get the document as HTML.
    */
   public html() {
-    const div = document.createElement('div')
-    const fragment = DOMSerializer
-      .fromSchema(this.schema)
-      .serializeFragment(this.state.doc.content)
-
-    div.appendChild(fragment)
-
-    return div.innerHTML
+    return getHtmlFromFragment(this.state.doc, this.schema)
   }
 
   /**
diff --git a/packages/core/src/utils/generateHtml.ts b/packages/core/src/utils/generateHtml.ts
index e1f1b6f4..3706fed7 100644
--- a/packages/core/src/utils/generateHtml.ts
+++ b/packages/core/src/utils/generateHtml.ts
@@ -1,26 +1,11 @@
 import getSchema from './getSchema'
-import { Node as ProseMirrorNode, DOMSerializer } from 'prosemirror-model'
+import getHtmlFromFragment from './getHtmlFromFragment'
+import { Node, DOMSerializer } from 'prosemirror-model'
 import { Extensions } from '../types'
-import { Schema } from 'prosemirror-model'
 
-export default function generateHtml(doc: object, schema: (Extensions | Schema)): string {
-  let useSchema
+export default function generateHtml(doc: object, extensions: Extensions): string {
+  const schema = getSchema(extensions)
+  const contentNode = Node.fromJSON(schema, doc)
 
-  if (Array.isArray(schema)) {
-    useSchema = getSchema(schema as Extensions)
-  } else {
-    useSchema = schema as Schema
-  }
-
-  const contentNode = ProseMirrorNode.fromJSON(useSchema, doc)
-  const temporaryDocument = document.implementation.createHTMLDocument()
-  const container = temporaryDocument.createElement('div')
-
-  const fragment = DOMSerializer
-    .fromSchema(useSchema)
-    .serializeFragment(contentNode.content)
-
-  container.appendChild(fragment)
-
-  return container.innerHTML
+  return getHtmlFromFragment(contentNode, schema)
 }
diff --git a/packages/core/src/utils/getHtmlFromFragment.ts b/packages/core/src/utils/getHtmlFromFragment.ts
new file mode 100644
index 00000000..f09a1174
--- /dev/null
+++ b/packages/core/src/utils/getHtmlFromFragment.ts
@@ -0,0 +1,14 @@
+import { Node as ProseMirrorNode, DOMSerializer } from 'prosemirror-model'
+import { Schema } from 'prosemirror-model'
+
+export default function getHtmlFromFragment(doc: ProseMirrorNode, schema: Schema): string {
+  const fragment = DOMSerializer
+    .fromSchema(schema)
+    .serializeFragment(doc.content)
+
+  const temporaryDocument = document.implementation.createHTMLDocument()
+  const container = temporaryDocument.createElement('div')
+  container.appendChild(fragment)
+
+  return container.innerHTML
+}